Cyclone

Cheney on the M.T.A. with native threads.

Cyclone is a brand-new Scheme-to-C compiler that allows practical application development using R7RS Scheme. Cheney on the MTA is used by Cyclone’s runtime to implement full tail recursion, continuations, and generational garbage collection. In addition, the Cheney on the MTA concept has been extended to allow execution of multiple native threads. An on-the-fly garbage collector is used to manage the second-generation heap and perform major collections without “stopping the world”.

Cyclone is the first compiler written entirely in the latest R7RS Scheme language standard, and the intent is to support as much of that language as possible.

Features

Installation

There are several options available for installing Cyclone:

Docker

Docker

Cyclone can be run from a Docker Image:

docker run -it cyclonescm/cyclone bash

Homebrew

Homebrew

Mac (and Linux!) users wanting to use Homebrew can do the following.

Note if Homebrew is not already installed: follow the instructions at https://brew.sh/ to install the homebrew package manager.

brew tap cyclone-scheme/cyclone
brew install cyclone-scheme/cyclone/cyclone-bootstrap

Arch Linux

Arch Linux

Arch Linux users can install using the AUR:

git clone https://aur.archlinux.org/cyclone-scheme.git
cd cyclone-scheme
makepkg -si

Build from Source

Build from Source

To install Cyclone on your machine for the first time on Linux, Windows, FreeBSD, and for Mac users wanting to install without using Homebrew, use cyclone-bootstrap to build a set of binaries. Instructions are provided for Linux, Mac, Windows (via MSYS), and FreeBSD 12.

Getting Started

After installing you can run the cyclone command to compile a single Scheme file:

$ cyclone examples/fac.scm
$ examples/fac
3628800

And the icyc command to start an interactive interpreter. Note you can use rlwrap to make the interpreter more friendly, EG: rlwrap icyc:

$ icyc

              :@
            @@@
          @@@@:
        `@@@@@+
       .@@@+@@@      
       @@     @@     Cyclone Scheme->C compiler
      ,@             http://justinethier.github.io/cyclone/
      '@
      .@
       @@     #@     (c) 2014-2019 Justin Ethier
       `@@@#@@@.     Version 0.11
        #@@@@@
        +@@@+
        @@#
      `@.
   
cyclone> (write 'hello-world)
hello-world

Read the documentation below for more information on how to use Cyclone.

Documentation

Example Programs

Cyclone provides several example programs, including:

Compiler Internals

License

Copyright (C) 2014 Justin Ethier.

Cyclone is available under the MIT license.

Recent News

Released Cyclone Scheme 0.11.7

December 5, 2019
Fixed build problems on Mac OS X and Homebrew!

Released Cyclone Scheme 0.11.6

December 2, 2019
This release contains a wide range of fixes and enhancements.

Released Cyclone Scheme 0.11.5

October 30, 2019
As of this release, LibTomMath is bundled with Cyclone and no longer a separate dependency.